Android 代码动态设置margin（报错：ViewGroup$MarginLayoutParams cannot be cast to ）

 params = ();
 marginParams = null;
//获取view的margin设置参数
    if (params instanceof ) {
        marginParams = () params;
    } else {
//不存在时创建一个新的参数
//基于View本身原有的布局参数对象
marginParams = new (params);
    }
(0,0,1,0);

 

千万记住这里面的if 语句的判断， 如果直接marginParams = new (params); 会报错

E/AndroidRuntime: FATAL EXCEPTION: main



    Process: , PID: 14673




    : $MarginLayoutParams cannot be cast to $LayoutParams



        at (:779)



        at (:685)



        at (:22093)



        at (:6614)



        at (:1514)



        at (:806)



        at (:685)



        at (:22093)



        at (:6614)